Manufacture of soap or mixtures containing soap.



M. R. A. SAMUEL da A. A. LOGKWOOD. MATEI'ACTURE 01:' SOAP 0R MIXTURES UONTAINING SOAP.

y APPLIOATION FILED om. 2n. 1907.

91 8,705. Patented Apr. 20, 1909.

MARQUE1 ltEGlNALD ANTHONY DON, ENGLAND, ASSlGNOltS T() 'illll` lAltHAM SOAP COMPANY,

ENGLAND.

SAMUEL ANl) ALFRED ANDREW LOCKWOOI), Ol," LON- LlMl'lED, O l" LONDON,

MANUFACTUBE OF SOAP OB MIXTURES CONTAINING SOAP.

Specification of Letters Patent.

Patented April 20, 1909.

Application iled October 28, 1907. Serial No. 399,692.

To all whom 'it may concern.'

Be it known that we, MARCUS REGINALD ANTHONY SAMUEL and ALFRED ANDREW Iioolrwoon, manufacturers, subjects of the King of Great Britain, both residing at 12 Minories, in the city of London, England, have invented new and useful Improvements in the Manufacture of Soap or Mixtures Containing Soap, of which the following is a s ecification.

his invention relates to improved means for incorporating mineral oils with soap or mixtures containing soap sucIi as detergents or lubricants and the like.

Various processes have been suggested for incorporating petroleum or like mineral oils with soa s usually by stirring or crutching. It has a so been suggested to force more or less volatile substances, including petroleum, while in a gaseous condition into soap or to add them in drops or in the form of a spray While liquid into soap heated to such a temperature that they were immediately volatilized; this process was carried out in a closed vessel and means were provided for carrying olf the fumes. In none of the processes suggested could the petroleum be added during the ordinary boiling of soaps in an open pot.

According to this invention a. suitable hydrocarbon oil which does not appreciably vaporize during the process of soap boiling, such as petroleum kerosene, is introduced in a finely divided or pulverized condition into the soap or saponaceous mixture at a suitable stage of its manufacture. The oil should not during this process be heated to such an extent that it a preciably volatilizes. Any tendency of the oi to volatilize may be also count/erected by supplying it under suitable pressure.

The process may be carried out as follows: 2 parts of tallow or other saponifiable substance are saponifed with caustic soda in the usual manner in an open pot. After salting out and while the soap is 'stillr boiling in an open condition, an excess of alkali being present, 5 parts of ordingrnynlpgsrgniln; ing oil having a flash poi ou 3 F. is injected in a finely divided state. The boiling is continued in order to render the mass uniform. It is then allowed to settle and is drawn oftinthe usual inanner.

soap when cool will solidify and the oil will not separate even if framed at a high temperature. A soft soap is made in the same way#care bein taken to add sufficient alkali to bring it into an open condition.

In the accompanying drawing Figure l is a view partly in elevation, partly in section and with parts broken away, illustrating an apparatus which may be used in carrying out our invention. Fig. Q is a detailed view of the pulverizer through which hydrocarbon may be passed into the boiling soap.

In the drawings a is a storage bank containing the mineral oil, b a gage provided with a glass front, c the outer tube of an injector, cl a tube for conveying steam or other fluid to the tube c, c the inner injector tube in communication with the tank, f an inner pulverizing chamber filled with woven wire nettin or cloth, g an outer pulverizing chamber fil ed with closely woven wire cloth.

k is the copper or pot.

The tank a, it will be observed, is located some distance above the pot h so that some pressure is produced on the oil while it is being supplied to the pot and this pressure may be such, if necessary, that any tendency for the oil to volatilize at the temperature employed while it is passing through the tube e to the pulverizer may be avoided.

The .mineral oil may be injected in the desired proportion, or a base or stock product containing a large percentage may be made and this may be added or injected preferably in a hot and liquid condition in the desired pro ortion to the finishing boil of the soap. n some cases this may be found advantageous as rolonged boiling of the oils is avoided and oss b volatilization or evaporation is minimize Detergents lubricants and the like may be made by adding petroleum to mixtures containing soap in a similar manner.

By this rooess very large percentages of mineral oi s may be incorporated with soap and such oils will not se arate even after prolonged boiling. Anot er advanta e of this process is that even where fairly arge percentages of mineral oil are resent a good and sufficient lather is obtainable; as much as and probably more than 20% Weight of mineral oil in proportion to the saponliable substances used will not prevent` a goed lather when the temperature of the water rises to the boil.

What we claim nu 5 l. ln a process Vfor the manufacture of a M W.-.:o-z `l. L neynlaining pernlanently enlulsilied li'd'rocaibon oi-l,v ,i11jeeti1'1g the hydrocarbon `I`Oill"-Ti-'l'i{l5-"divided condition into a soap mixed with an alkali, the hydrocarbon oil 10 being maintained during the proeess ai' a temperature below the point. al. which it appreeiably volatilizes.

2. In a process for the manufacture of a soa containing permanently emulsified 15 hy rocarbon oil, injecting the hydrocarbon 011 in a finely divided Condition into a soap mixed with an alkali the hydrocarbon oil being maintained during the process under sneh pressure and at such temperature (hat volatili/,ation thereof is prevented.

3. In a process for incorporating a hydrorarbon oil with soap, injecting heavy hydrocarbon oil in a finely divided condition into soap mixed with an alkali, (he hydrocarbon oil being maintained during the process al. n Le1111)e1at.u1'e below the point` at. which it apln'ecably volatilizes.

MARCUS REGINALU ANTHONY SAMUEL. ALFRED ANDREW LUKWOOD. W itnesses H. D. JAMESON, F. L. RAND. 

